Those two problems were the main reason . We just didn't have the time to persue it and had to move on to other projects . I am sure it could be done but it will take some good fab work.

Randy
M7 Tuning

 

thanks Randy,

they are good points but nothing that others haven't sorted out. i think the intake track could be the only real problem. twin pipes are a possability but that would be alot of work and a single pipe would look better. what did you guys try??

thanks Chris.

 

Our plan was to try and fit a return pipe from the turbo back thru the same tunnel that the normal exhaust pipe makes it way through. The only way to do it and have enough space for both and no contact issues was to run two smaller than stock pipes or one much smaller return pipe only and a stock sized exhaust tube. Neither of these options were optimal nor would they insure that there would be no vibration or rubbing problems . The final kicker again was the oil line issue on top of the pipe delima. We had a well known Turbo Specialist consulting on the project but we just ran out of time and had to move on in order to accomplish some other goals .

Randy
M7 Tuning

 

I guess you could say that boost is boost but I would never place a turbo that far away from the engine.

One of the awesome things about a turbo is that not only does it convert kinetic energy in the exhaust but it also converts heat. Putting the turbo that far away would really reduce the heat and you would loose a lot of pressure from having it after the Cat.

Plus that's a lot of piping to get up to pressure before it hits your throttle body. You've got 4-6 feet out to the turbo and then 4-6 feet back to the IC plus 2-4 feet of IC and pipe to the throttle body. So you're looking at 10-16 feet of tubing to pressurize before it hits your engine. That will induce some serious lag. You will need a turbo with big boost to make up for the lag.

With the big boost you would need to keep the system pressurized a top mount IC would be useless so you'd have to fab up some sort of large FMIC. So you'd be adding more pressure drop to the equation.

I also don't know how I'd feel about having anything that glows red hot and spits fire out of it anywhere near my gas tank.

If you decide to go this route anyway and are looking at a quick spooling turbo with big boost check out the "Disco Potato" from Garrett. It's one of the best.

All that said, I also believe that we should each follow our dreams that lead us to our own vision of a boss car. So go for it. Have fun and let us all know how it works.

 

maxmini, thanks for that mate.

i understand the piping thing. i have just found out the the stock STS stuff for the LS1 uses 2 1/4 inch cold piping! i thought thats tiny but it works and guys are pushing over 700bhp to the rear wheels using it! so it got me thinking that maybe two 1.5inch pipe could work on a mini. now there will be more friction and more volume but there will also be more surface area to help cooling.

the oiling is strange as STS, and loads of others that have done it themselves, have cracked it no problems. i think most run small sumps on the turbos and have the pumps pull form there. most of the big guys do dump the oil back into the sump though.

i think the stock exhaust piping would be best. it would keep volume down an d gas speed up. with some wrap it would radiate very little heat. also its a very nice route on the mini which would also help.

thanks for being open though.

CHris.

 

RussellCory, you make some good points there mate, and they where things that i thought first time i saw someone talking about these rear mounts. but they do work and work well!

the piping inant really an issue as you would be supprised how much piping there is on a normal front mount setup!

the exhaust can loose alot of heat. headers m,ake this worse as they have much larger surface area. but you can get around it with either ceramic coatings or simply exhaust wrap! agian this has been back to back tested and proven to WORK!

the intercooler is a good point, but im waiting to see Revelutions new bell top mount intercooler. it looks MASSIVE and will hopefully provide much better cooling than anything else on the market. if not then i personally would look into chargecooling.

i wouldn't worry to much about the turbo getting hot near the fuel tank. some simple shielding would get temps down to normal. also i think you can get coated housings that would help. or even better would be a stainless steel housing.

anyway i will keep looking and pondering.

Chris.